Lee announced Monday that the monthly event is also changing hours in 2011 and will happen between 11 a.m. and 4 p.m. Sunday Streets starts March 20 along the Embarcadero.

1906 Color Photographs From San Francisco

Sunday Streets shuts down various parts of town on weekends so that locals and visitors can have free reign of an area without the worry of cars. Thousands turn out each week to experience the city on foot.

The date and exact street locations for Chinatown and North Beach haven't been announced yet.

June 12: Bayview, on 3rd Street from Mission Bay, Dogpatch to Bayview Opera House

July 10: Great Highway and Golden Gate Park #2

August 14: Civic Center and the Tenderloin

September 11: Western Addition, North Panhandle, Alamo Square and Fillmore

October 23: Mission #2

San Francisco St. Pat's Parade

"I am delighted to announce the return of one of the City’s most exciting initiatives, Sunday Streets,” said Lee in a press release. “And this year, I’m pleased to announce a new route in the Chinatown and North Beach neighborhoods. Now, more than ever, it is community building programs, such as Sunday Streets, that are critical to our City’s well-being.”

San Francisco was the third city in the United States to premier Sunday Streets, but it is by far the largest.